package com.atguigu.lease.common.utils;

import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import io.jsonwebtoken.*;
import io.jsonwebtoken.security.Keys;

import javax.crypto.SecretKey;
import java.util.Date;

/**
 * ClassName:JwtUtil
 * Package:IntelliJ IDEA
 * Description:
 *
 * @Author xiaoming
 * @Create 2024-11-12 14:27
 * @Version 1.0
 */
public class JwtUtil {

    private static SecretKey secretKey = Keys.hmacShaKeyFor("asdfsadfssssssssdadadadasdsadsadadasd".getBytes());
    public static String createToken(Long userId,String username){
        String jwt = Jwts.builder()
                .setExpiration(new Date(System.currentTimeMillis() + 3600000*24*365L))//一年
                .setSubject("LOGIN_USER")
                .claim("userId", userId)
                .claim("username", username)
                .signWith(secretKey, SignatureAlgorithm.HS256)
                .compact();
        return jwt;
    }

    public static Claims parseToken(String token){

        if (token==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_LOGIN_AUTH);
        }

        try{
            JwtParser jwtParser = Jwts.parserBuilder().setSigningKey(secretKey).build();
            return jwtParser.parseClaimsJws(token).getBody();
        }catch (ExpiredJwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_EXPIRED);
        }catch (JwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_INVALID);
        }
    }

    public static void main(String[] args) {
        String user = createToken(2L, "user");
        System.out.println(user);
    }
}
